A paint system will only perform optimal if pre-treatment and application have been done correctly according to the prescribed instructions and methods.

The COT laboratory performs regularly tests and investigations in this area; some examples are the following:

  • surface cleanliness (visual inspection according to ISO 8501 and ISO 8502 and measuring the chloride content using the Bressle test
  • surface roughness (ISO 8503; Ra and Rz values, Testex tape, roughness comparator)
  • characterising blasting abrasives (ISO 11127; particle size distribution, moisture content, conductivity, soluble salts bulk density)
  • effect of pre-treatment
  • chloride content in concrete
  • moisture content
  • mixing ratio
  • workability (with airless of air spraying)
  • overspray
  • drying times
  • pot life (ISO 9514)
  • spreading ratio
  • streakiness
  • wrinkling, beading
  • orange peel effect
  • sagging

The COT laboratory has an own application room to prepare panels / samples for various tests. We have brush, roller, air spraying and airless spray equipment (pump 1:66).

Autoclave tests

Over the years, the demand for paint testing at high pressure and temperature in combination with corrosive gases increases. In various standards and specifications such as ISO 15741, EN 10289, EN 10290, ARAMCO 09-SAMSS-067 APCS 27, [...]